507746-01
Issue 1821
Page 16 of 39
RED
YEL
BLU
BLK
BRN
COMFORT SYNC
THERMOSTAT
OUTDOOR UNIT
PUR
OUTDOOR
SENSOR
(X2658)
BLK
RED
BLK
PUR
EDA UNIT
FAN
RELAY
NOTES -
/1\ NOT REQUIRED WITH SINGLE
‐
SPEED OUTDOOR FAN.
/2\ NOT REQUIRED FOR SINGLE-STAGE OPERATION.
/3\
T
T
D
DO NOT CUT ON-BOARD LINK R -O.
CUT ON-BOARD LINK R-DS WHEN DEHUMIDIFICATION
TERMINAL IS USED.
CUT ON-BOARD LINK Y1-Y2 FOR TWO-
STAGE A/C
AIR HANDLER CONTROL INCLUDES FACTORY-INSTALLED
JUMPERS BETWEEN W1 AND W2 AND BETWEEN W2 AND W3.
SEE FIGURE 22 FOR HEAT SECTION CONFIGURATION.
Y1-Y2
2-STAGE
COMPR
R-O
HEAT
PUMP
R-DS
DEHUM
OR
HARMONY
CUT FOR OPTIO
N
BCE7S
IMPORTANT — USE CARE WHEN CUTTING
ON-BOARD LINKS TO PREVENT DAMAGE TO
CONTROL. SEE FIGURE 19, BCE7S JUMPER AND
LINK GUIDE, FOR FURTHER DETAILS.
Figure 17. Control (Field Wiring) — Cooling Application (Humidification Control and Second-Stage Outdoor Fan
Relay Wiring) Non-Communicating
Figure 18. Control (Field Wiring) — Heat Pump Application (Humidification Control and Second-Stage Outdoor
Fan Relay Wiring) Non-Communicating
YELLOW
BLUE (NOT REQUIRED FOR SINGLE STAGE)
RED
BLACK
PURPLE
PURPLE
BLACK
BLUE
RED
FAN RELAY (NOT REQUIRED
WITH SINGLE−SPEED
OUTDOOR FAN)
OUTDOOR
SENSOR
(X2658)
COMFORT SYNC
THERMOSTAT
BCE7S
OUTDOOR UNIT
CUT ON-BOARD LINK R -O.
CUT ON-BOARD LINK Y1-Y2 FOR TWO-STAGE A/C ONLY
CUT ON-BOARD LINK R-DS WHEN DEHUMIDIFICATION
TERMINAL IS USED.
T
T
Y1-Y2
2-STAGE
COMPR
R-O
HEAT
PUMP
R-DS
DEHUM
OR
HARMONY
CUT FOR OPTIO
N
IMPORTANT — USE CARE WHEN CUTTING
ON-BOARD LINKS TO PREVENT DAMAGE TO
CONTROL. SEE FIGURE 19, BCE7S JUMPER AND
LINK GUIDE, FOR FURTHER DETAILS.
